1. Key Properties
AISI/SAE 1040 is a medium-carbon steel that provides a higher level of strength and hardness compared to lower carbon steels. It has good machinability and weldability and is often used in applications that require moderate strength, wear resistance, and shock resistance. After heat treatment, 1040 steel can be hardened to a higher tensile strength, making it suitable for more demanding applications that involve moderate to high stress.
2. Applications/Industries
Automotive: Components such as crankshafts, gears, axles, and camshafts that require increased strength and toughness.
Heavy Machinery: Parts like shafts, spindles, and structural components that must handle moderate mechanical stress.
Tool Manufacturing: Dies, tools, and other parts exposed to wear and moderate impact.
Construction: Structural parts, beams, and supports that demand higher tensile strength than lower-carbon steels.
Industrial Equipment: Parts for power transmission systems, including couplings, cams, and bearings.
3. Certifications/Standards
ISO 9001 Certified: Ensures consistent quality in manufacturing.
Meets AISI/SAE 1040 Specifications: Complies with the American Iron and Steel Institute (AISI) and Society of Automotive Engineers (SAE) standards for medium-carbon steels.
4. Chemical Composition
Carbon (C): 0.38–0.43%
Manganese (Mn): 0.60–0.90%
Phosphorus (P): ≤ 0.035%
Sulfur (S): ≤ 0.035%
Silicon (Si): ≤ 0.30%
5. Technical Specifications
Yield Strength: Approx. 450–600 MPa (depending on heat treatment)
Tensile Strength: Approx. 600–800 MPa
Hardness: 190–230 HB (Brinell Hardness)